单项选择题
如图所示铰接悬臂行车道板、承受公路-Ⅱ级荷载
A.23kN B.32kN C.16kN D.21kN
A.30 B.42 C.60 D.83
A.134.69kPa B.143.76kPa C.157.83kPa D.166.41kPa